`test.langmaster.vn`

	DNSSEC	⚠️ Not signed
	A	171.244.51.51^{🇻🇳 VTDC-AS-VN171.244.48.0/22 Proxy-registered route object}

`langmaster.vn`

	DNSSEC	⚠️ Not signed
	A	171.244.51.221^{🇻🇳 VTDC-AS-VN171.244.48.0/22 Proxy-registered route object}
	NS	`a.ns.hostvn.net` ⭐
	NS	`b.ns.hostvn.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`aspmx2.googlemail.com`⁽¹⁰⁾
	MX	`aspmx3.googlemail.com`⁽¹⁰⁾
	TXT	`google-site-verification=4CHfl8D2dLHgModgSCddMIkiHIwl07EYY8ye13Xbyi8`
	SOA	`a.ns.hostvn.net`hostmaster@hostvn.net 2026-03-21 #4

📈 Tranco rank: #881,548

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DNS History

1 record (1 active, 0 former)

●A171.244.51.512026-05-01 → 2026-05-12 · 2 obs

● 2026-05-01 08:56:10
● 2026-05-12 00:27:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
langmaster.vn	b.ns.hostvn.net, a.ns.hostvn.net	-

✅ Authoritative Response

Server:185.136.98.112

NS records: b.ns.hostvn.net, a.ns.hostvn.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for langmaster.vn (unsigned zone)

⏱️ Timing

Total: 822ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`171.244.51.51`

Analysis

IP Addresses

test.langmaster.vn points to an IP address: 171.244.51.51.

other host names include aifirst.vn, hbrholdings.vn, study.langgo.vn, hbr.edu.vn and tonydzung.com; they share IP numbers with test.langmaster.vn.

test.langmaster.vn - robtex.com